Adjustable bedframe



c. v. JolHNsoN ADJUSTABLE BED FRAME Filed April 28,' 1942 2 Sheets-Sheet l May 16, 1944.. C, y, JOHNSON 2,349,172

ADJUSTABLE BED FRAME Filed April 28, 1942 2 Sheets-Sheet 2 f f 291 a /8 Patented May 16, 1944 UNITED STATES PATENT OFFICE 2,349,172 ADJUSTABLE BEDFRAME Clarence Verne Johnson, Yates Center, Kans.

Application April 28, 1942, Serial N0. 440,835

3 Claims.

The invention aims primarily to provide an adjustable bed frame which may be usedas a crib for'an infant, may be extended in length and width when the child is say eighteen months or two years old, and may then be further extended for use by the same child until he is large enough to occupy aA full size bed without danger of rolling therefrom.

A further object is to provide a bed frame which is not only telescopic both transversely and longitudinally, but may be folded into the form of a narrow parallelogram to permit storage or carrying in minimum space.

A still further object is to provide a novel construction which will be relatively simple and inexpensive, yet eiiicient, durable and in every way desirable.

With the foregoing in View, the invention resides in the novel subject matter hereinafter described and claimed, description being accomplished by reference to the accompanying drawings.

Figure 1 is a side elevation partly broken away and in section showing the frame adjusted to its shortest length.

Fig. 2 is a fragmentary transverse sectional View on line 2--2 of Fig. 1.

Fig. 3 is a detail horizontal sectional view on line 3-3 of Fig. 1.

Fig. 4 is a view similar to Fig. l but showing the frame extended to greater length.

Figs. 5 and 6 are perspective views of inserts which are used when lengthening the frame.

Fig. '7 is an end elevation partly broken away and in section showing the Ibed adjusted to minimum width.

Fig. 8 is a horizontal sectional view on line 8--8 of Fig. 7.

Fig. 9 is a fragmentary View similar to Fig. '7 but showing the frame extended to greater width.

Fig. 10 is a sectional fragmentary perspective view of a portion of the construction shown in Figs. 7, 8 and 9.

Fig. 11 is a diagrammatic plan view showing the frame in folded condition.

Four corner posts I2, I3, I4 and I5 are employed, and two side fences or guards I6, as well as two end guards or fences I1, are so connected with said corner posts that the entire frame may be folded into the form of a narrow parallelogram as shown diagrammatically in Fig. 11. Moreover, the side guards I6 and end guards I1 are telescopic, not only to increase the size of the frame as the child demands such size in- Athe outer tubular rail sections I9.

crease, but to permit said frame to have minimum size when it is to be folded.

Each side guard or fence I6 comprises an upper telescopic rail R and a lower telescopic rail R. Each of these rails comprises an inner longitudinal section I3 attached to one corner post, and an outer tubular longitudinal section I9 attached to the other corner post, the two sections I8 and I9 being slidably engaged with each other. The rail section i8 of each rail R and R' is formed with a longitudinal slot 2i), the slot of the rail R being disposed downwardly while that of the rail R' is disposed upwardly. The upper and lower inner rail sections I 8 are connected by spaced vertical rungs 2| which are suitably secured thereto, said rungs passing slidably through the slots 20.

The side construction so far described, permits the length of the sides to be extended as desired. When the rail sections I8 and i9 are relatively `pulled outwardly as seen in Fig. 4, a space S exists between the rung 2l at one end of the series and one of the corner posts (say l5) and this space is Aconsiderably greater than the space S then existing between the rung 2! at the other' end of said series and the other corner post (12 for instance). To prevent the child from possibly crawling through the space S, I provide an additional rung Zla (Figs. 4 and 5) or additional rungs 2Ib (Fig. 6) to be placed in the space S, the

upper and lower ends of the rungs 2Ia and 2Ib being secured to inserts which are received in The inserts to which the single rung 22a is secured, are denoted at 22, and those carrying the rungs 2Ib are shown at 22a. When therail sections I9 are pulled entirely from the sections I8, the inserts with one or more of the additional rungs may be slid into said rail sections I9 and these sections are then again telescoped with the sections I8, thus increasing the length of the bed as required and leaving no gap through which the child may crawl or fall.

For normally locking the rail sections I8 and I9 with respect to each other, any desired means may be employed. For illustrative purposes, set screws 23 are shown.

For connecting the rail sections I8 and I9 with the corner posts, I prefer to employ collars 24 surrounding said posts and having arms 25 secured against opposite sides of said rail sections. Rivets or the like 26 may be employed to secure the arms 25 to the rail sections, and to prevent these rivets or the like from having any tendency to transversely collapse the rail sections by vertical rungs 2l', and the sections I9' havev slots Z through which said rungs pass. Two vertical sldably overlapped panel-forming plates 3U are provided, one of these plates 3 0 being secured to the section IB attached to one corner post, while the other plate 30* issecured tothe section I8 attached to the other corner post.

hen the bed frame is adjusted to minimum width,y the plates 30 overlap to the maximum as seen in Figs. 7 and 8 but when theframe is adjusted to widen it, the plates 3d overlap less. In either instance, they represent a center panel at they bed end and they of coursepreventthe formation of any gap between the relatively adjusted sections when the frame is widened.

The sections I8 may be secured to the posts in any suitable way but I prefery to provide means 2d which may be considered as identical with the means 24, 25, 2s` aboveuescribed. ordinary screws or other fasteners 28' may be employed for securing the connections 24 to the bed posts if desired.

It is preferable that two of the connections M' secure the rail sections I9 to one of the posts in addition to securing two of the inner sections i8 tosaid posts.

From the foregoing taken in connection with the accompanying drawings, it will be seen that novel and advantageous provision has been made for carrying out the objects of the invention. While preferred details have been disclosed, numerous variations may be made within the scope of the invention as claimed, and obviously I am not restricted to any particular materials. While metal will usually be preferred, it is of course possible to make use of other appropriate materiale.

The' invention is particularly advantageousv for i I claim:

1 In a bed frame, two corner posts; upper and lower telescopic rails extending between said posts; each of said rails comprising an inner rail section attached to one post, and an outer tubular rail .section attached to the other post and slidably receiving said inner rail section; each of said outer tubular rail sections having a longitudinal slot, the slot of the upper rail being disposed downwardly and the slot of the lower rail being disposed upwardly; anda series of vertical rungs extending between said inner rail sections and passing through said slots, the ends of said rungs being secured to said inner rail sections, there being a much greater space between the aforesaid other post and the rung at one end of said series than between the aforesaid one post andthe rung at the other end of said series; at least one additional rung in said greater space and extending through said slots; and upper and lower inserts iixedly carrying said additional rung and disposed within said outer tubular rai-1 sections between the free ends of said inner rail sections and said other post; saidV inserts being slidable longitudinally out of said outer tubular rail sections` when the latterare longitudinally slid from said inner rail sections; the free ends o said outer rail sections being so spaced from said one post that said rails may be telescopically shortened. after removal of said inserts.

2.l In a bedframe, two corner posts; upper and lower telescopic rails extending between said posts; each of said rails comprising one inner rail section attached to one post, a second inner ra-ilzsection attached to the other post, and an outer tubular rail section receiving the two inner rail sections and slidably engaged with at least one of said inner rail sections; each4 of said outer tubular rail sections having a longitudinalslot, the slot of the upper rail being disposed downwardly and the slot of the lower rail being d-isposed upwardly; and spaced vertical rungs ex.- tending between and secured to said inner rail sections and extending slidably through said slots.

3. A structure as specified in claim 2; together with two slidably overlapped panel-forming plates extending through said slots, one of said plates being secured to the free ends ofthe vinner rail sections attached to said one post; the other of said plates being securedv to the freeends of the inner rail sections attached to saidtother post.

CLARENCE VERNE 'JOHNSON'. 

